Status (Blinking Slowly: On for 1s
and Off for 1s; Blinking Fast: On for
0.2s and Off for 0.2s)
The SUN2000 is operating in grid
The DC is on and the AC is off.
Both the DC and AC are on, and the
SUN2000 is not connected to the power
grid.
The DC is off and the AC is on.
The SUN2000 is operating in the off
The DC is on, and the SUN2000 has no
output in the off
The SUN2000 is operating in the
overload in backup mode.
Both the DC and AC are off.
There is a DC environmental alarm. For
example, the input voltage of the PV
string is high, the PV string is reversely
connected, or the insulation resistance is
low.
There is an AC environmental alarm,
such as grid undervoltage, grid
overvoltage, grid overfrequency, or grid
underfrequency.
Communication is in progress.
A mobile phone is connected.
There is no communication.
Device
replacement
indicator
The SUN2000 hardware is faulty and
the SUN2000 needs to be replaced.
1. If a battery is connected, turn on the battery switch.
2. Turn on the AC switch between the SUN2000 and the power grid.
3. Turn on the DC switch (if any) between the PV strings and the SUN2000.
4. Turn on the DC switch at the bottom of the SUN2000.
5. Observe the LED indicators to check the operating status of the SUN2000.
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